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- IIT Research Institute✖[remove]80
- Electromagnetic Compatibility Analysis Center (U.S.)15
- United States. Federal Aviation Administration. Systems Research and Development Service13
- United States11
- United States. National Aeronautics and Space Administration8
- Industrial Environmental Research Laboratory (Research Triangle Park, N.C.)6
- Stockham, John D.4
- United States. Federal Railroad Administration. Office of Research and Development4
- United States. National Highway Traffic Safety Administration4
- Viergutz, O. J.4
- National Fire Data Center (U.S.)3
- O'Neill, Daniel J. (Daniel Joseph), 1955-3
- United States. Environmental Protection Agency. Office of Research and Development3
- Barnett, Ralph L.2
- Cann, M. W. P.2
- George C. Marshall Space Flight Center2
- Hensler, Thomas2
- Hermann, Paul C.2
- Langley Research Center2
- Larsen, David C.2